CN109333866B

CN109333866B - Drying device of masterbatch

Info

Publication number: CN109333866B
Application number: CN201811472324.XA
Authority: CN
Inventors: 张春琦; 凌健
Original assignee: Ningbo Youhe New Material Technology Co ltd
Current assignee: Ningbo Youhe New Material Technology Co ltd
Priority date: 2018-12-04
Filing date: 2018-12-04
Publication date: 2020-11-06
Anticipated expiration: 2038-12-04
Also published as: CN109333866A

Abstract

The invention discloses a color master batch drying device which comprises a feeding conveyer belt and a discharging conveyer belt, wherein a drying table is arranged between the feeding conveyer belt and the discharging conveyer belt, an air pipeline and a hot air pipeline are arranged in the drying table, a protrusion is arranged on the side surface of the drying table, a feeding hole is formed in the protrusion, a drying hole and an air supply hole are formed in the drying table, a first regulating valve is arranged in a pipeline, connected with the hot air pipeline, of the air supply hole, and a feeding hole is formed in the drying table; a limiting plate is arranged above the drying table, a through ventilation hole is formed in the end face of the limiting plate, a humidity detector is arranged in the ventilation hole, an isolation cover is arranged on the limiting plate, the isolation cover and the limiting plate form a first cavity, an exhaust fan is arranged on the side wall of the isolation cover, and a filtering device is arranged on the side wall of the isolation cover; side protection blocks are arranged on two sides of the drying table; the method has the advantages that the color master batches are dried, fully and uniformly heated, and unqualified color master batches can be preliminarily screened out.

Description

Drying device of masterbatch

Technical Field

The invention relates to color master batches, in particular to a drying device for the color master batches.

Background

The color master batch is a plastic colorant which is prepared by well dispersing pigment or additive and thermoplastic resin with high proportion, and the selected resin has good wetting and dispersing effects on the colorant and has good compatibility with the material to be colored; color masterbatch tinting is the most commonly used plastic tinting process today. The color master batch is a new product for coloring plastics and fibers developed in the 60 th of the 20 th century, and is a polymer compound prepared by uniformly loading an excessive amount of pigment into resin.

In the production process of masterbatch, need dry and air-dry to the color masterbatch, it is improper to still avoid the temperature in dry and air-dry, especially high, the masterbatch dwell time overlength in the machine, it is inhomogeneous to be heated, the masterbatch that is close to heat source department is heated for a long time, high temperature, cause the toner to burn, and the masterbatch that keeps away from heat source department is then heated the time and is short temperature low, thereby influence the use of masterbatch, the availability factor of masterbatch has been reduced, use cost is improved, be used for solving the not enough of prior art.

Disclosure of Invention

The invention aims to solve the technical problem of providing a drying device capable of quickly and uniformly air-drying color master batches.

The technical scheme adopted by the invention for solving the technical problems is as follows: a drying device for color master batches comprises a feeding conveying belt and a discharging conveying belt, wherein a drying table is arranged between the feeding conveying belt and the discharging conveying belt, an air pipeline and a hot air pipeline are arranged in the drying table, a protrusion is arranged on the side face, close to the feeding conveying belt, of the drying table, a feeding hole is formed in the upper end face of the protrusion, a drying hole is formed in the upper end face, close to the feeding conveying belt, of the drying table, the drying hole is connected with the hot air pipeline, an air supply hole is formed in the upper end face, close to the discharging conveying belt, of the drying table, a feeding hole is formed in the upper end face, close to the discharging conveying belt, of the drying table, and the feeding hole, the feeding hole and the air supply hole; an upper protective cover is arranged above the drying table, a limiting plate is arranged at a position, close to the drying table, of the upper protective cover, a through ventilation hole is formed in the end face of the limiting plate, a humidity detector is arranged on the inner circumferential surface of the ventilation hole above the middle of the drying table, an isolation cover is arranged on the limiting plate, the isolation cover and the limiting plate form a first cavity, an exhaust fan is arranged on the side wall of the isolation cover, and a filtering device is arranged on the side wall of the isolation cover opposite to the exhaust fan; and side protection blocks are arranged on two sides of the drying table, and the upper end surfaces of the side protection blocks are higher than the lower end surfaces of the limiting plates. The masterbatch on the feeding conveyer belt is separated from the conveyer belt, blown up by the feeding hole on the drying table and conveyed to the upper part of the drying table, the drying hole on the drying table is connected with a hot air pipeline, the masterbatch is continuously blown into a suspended state by blown dry hot air, the masterbatch rolls in the air, all surfaces can be subjected to the hot air, the heating is uniform, and the drying effect is good; the inclined drying holes can move the color master batches towards the direction of the discharging conveying belt. There is the ventilation hole on the last safety cover of drying stage, will the wind discharge stoving region that the drying stage blew off, the tiny particle in the masterbatch passes through under hot-blast blowing the ventilation hole gets into in the last safety cover, quilt the edge of protection casing is blown to the exhaust fan, separates with the masterbatch, plays the effect of cleaing away impurity. The moisture detector above the middle of the drying table can detect the humidity of air flowing through the vent holes, judge whether the color master batches need to be dried continuously, and control the proportion of hot air in the air supply holes at the rear section of the drying table.

Compared with the scheme, the air speed of the drying hole can be controlled by arranging a second regulating valve in the channel connecting the hot air channel and the drying hole.

Compare the further improvement of above-mentioned scheme, be provided with the side inclined plane on the side that the side protection piece is close to the drying bench, the side inclined plane lower extreme is close to the drying bench more and is higher than the drying bench up end, be provided with the side blow hole on the side inclined plane. The side inclined surface on the side protection table can enable the color master batches blown to the side edge to fall into the drying table again to prevent accumulation; the side blowing holes can blow the color master batches in the air back to the position right above the drying table.

Compared with the scheme, the lateral blowing holes are obliquely upward.

Compared with the scheme, the drying table is further improved, the upper end surface of the drying table is inclined, and the discharging position of the drying table is lower than the feeding position.

Compare the further improvement of above-mentioned scheme, limiting plate is close to filter equipment's up end department and is provided with the holding tank, holds little impurity in the masterbatch or unqualified little masterbatch, prevents to fall back on the drying stage.

Compared with the scheme, the feeding hole is further improved, the feeding hole is connected with a hot gas pipeline, and the feeding hole is connected with an air pipeline.

Compared with the prior art, the color master batch drying device has the advantages that the color master batch is dried in a mode of blowing the color master batch into the air, when the color master batch is blown into the air, the color master batch is in a rolling state, all surfaces can be heated, moisture on the surfaces can be blown off or evaporated, and the color master batch is taken into the upper protective cover and is discharged through the exhaust fan; the humidity detector in the upper protective cover regulates and controls the proportion of hot air in the air supply hole by detecting the humidity of air; the drying effect is good, and the color master batch is prevented from being affected by overhigh temperature or poor heating to cause bad influence on the quality of the color master batch.

Drawings

Fig. 1 is a front sectional view of the present invention.

Fig. 2 is a side cross-sectional view of the present invention.

Fig. 3 is a schematic structural view of the drying table of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Fig. 1 is a drying device for color master batches, which comprises a feeding conveyer belt 51 and a discharging conveyer belt 52, wherein a drying table 1 is arranged between the feeding conveyer belt 51 and the discharging conveyer belt 52. An air pipeline 15 and a hot air pipeline 16 are arranged in the drying table 1, and gases such as low-temperature or normal-temperature air are introduced into the air pipeline 15; the hot air pipeline 16 is internally filled with heated and dried air, and the temperature of the hot air is constant within a certain range through the combined action of the temperature sensor and the heating rod.

The side face, close to the feeding conveyer belt 51, of the drying table 1 is an inclined face, the upper end of the side face of the drying table 1 inclines towards the discharging conveyer belt 52, the inclined face is provided with a protrusion 21, the protrusion 21 is located below the limit position of the feeding conveyer belt 51, and the protrusion 21 is in a cuboid shape and is integrally spliced with the side face of the drying table 1 in a welding mode and the like. The upper end face of the protrusion 21 is provided with a feeding hole 13, the feeding hole 13 inclines towards the movement direction of the color master batches and is the same as the inclination of the side face, close to the feeding conveying belt 51, of the drying table 1, and the feeding hole 13 is located right below the separation position of the feeding conveying belt 51 and the color master batches. The loading hole 13 is connected to a hot gas line 16, and the line connected thereto is provided with a control valve for controlling the wind power of the loading hole 13, which is not shown in the drawings since it is not relevant to the present invention for controlling the wind power when the apparatus is installed. When the color master batches are separated from the feeding conveyer belt 51, the dry hot air blown from the feeding holes 13 blows the color master batches to the upper part of the drying table 1. The color master batches are moved to the upper side of the drying table 1 from the feeding conveyor belt 51 in a drying hot air blowing mode, the color master batches mixed together can be blown away firstly, so that the color master batches are better dried in the follow-up process, meanwhile, the moisture on the color master batches can be simply blown off and the color master batches are heated preliminarily, the preliminary drying and separation effects are achieved, and the larger color master batches cannot be blown to the drying table 1 due to the fact that the larger color master batches are heavier and are separated from the normal color master batches.

The upper end surface of the drying table 1 is inclined, and the discharging position of the drying table 1 is lower than the feeding position. The drying device is characterized in that approximately two thirds of the upper end face of the drying table 1 close to the feeding conveyer belt 51 is provided with drying holes 11, the drying holes 11 are inclined towards the color master batch conveying direction, the tail end of each drying hole 11 is connected with a main drying air channel 19, each main drying air channel 19 is connected with a hot air pipeline 16, and a second adjusting valve 18 is arranged at the joint of each main drying air channel 19 and each hot air pipeline 16 and used for adjusting the air output and the air speed of each drying hole 11. Second governing valve 18 makes the masterbatch incessantly move in vertical direction through the size of adjusting the air output, is in the state that rolls to the striking last protection casing 3 of drying stage 1 top or the terminal surface of drying stage 1, the impurity that will glue on the masterbatch or the masterbatch together passes through the striking separation.

The remaining upper end face of the drying table 1 is provided with an air supply hole 12, and the air supply hole 12 and the drying hole 11 have the same inclination angle. The air supply hole 12 is simultaneously connected with the air pipeline 15 and the hot air pipeline 16, and the air outlet temperature of the air supply hole 12 is affected by the air pipeline 15 and the hot air pipeline 16. The hot air pipeline 16 is connected with an auxiliary dry air channel 20, a first adjusting valve 17 is arranged in the auxiliary dry air channel 20, and the first adjusting valve 17 controls the flow of hot air. The auxiliary drying air passage 20 is connected to each of the blowing holes 12. The air supply hole 12 mainly plays a role in conveying the dried color master batch to the discharging conveyer belt 52 and simultaneously cooling and continuing drying.

The edge of the upper end face of the drying table 1 close to the discharging conveying belt 52 is provided with a feeding hole 14, and the feeding hole 14 inclines towards the discharging conveying belt 52. The feeding hole 14 is connected with an air pipeline 15, and the color master batches are fed to the upper part of the discharging conveyer belt 52 from the upper part of the dryer and fall onto the discharging conveyer belt 52.

An upper protective cover 3 is arranged above the drying table 1 and consists of a plate-shaped limiting plate 33 and a shielding cover 34. The limiting plate 33 is located at the lowest part of the upper protective cover 3 and right above the drying table 1, and the length and the width of the limiting plate 33 are both larger than those of the drying table 1. Be provided with ventilation hole 31 that runs through on the terminal surface of limiting plate 33, the wind process of dry hole 11 and blast hole 12 ventilation hole 31 gets into in the upper shield 3, ventilation hole 31 and the size looks adaptation of masterbatch can follow less masterbatch and impurity blow out preliminary screening masterbatch in the ventilation hole 31. A moisture detector 32 is arranged on the inner circumferential surface of the vent hole 31 above the middle part of the drying table 1, and the moisture detector 32 can detect the water content in the air, so as to judge the drying condition of the color master batches and determine whether the first adjusting valve 17 needs to be opened to increase the amount of hot air for drying. Be connected with the cage 34 that the bending type formed on the limiting plate 33, first chamber 35 is constituteed with limiting plate 33 to cage 34, be provided with exhaust fan 36 on the lateral wall that cage 34 is on a parallel with the pay-off belt direction of motion, exhaust fan 36 will pass through ventilation hole 31 gets into the gaseous or the impurity exhaust drying device in first chamber 35. The side wall of the isolation hood 34 opposite to the exhaust fan 36 is provided with a filtering device 37, and impurities or small color master batches in the air blown by the exhaust fan 36 are filtered and left in the upper protection hood. The limiting plate 33 is provided with an accommodating groove 38 at the upper end face close to the filtering device 37, and the accommodating groove is used for accommodating impurities or small color master batches and preventing the impurities or the small color master batches from falling onto the drying table 1 again.

The drying table is characterized in that side protection blocks are arranged on two sides of the drying table 1 and used for preventing the color master batches from flying out of the drying table 1. The upper end surface of the side protection block is higher than the lower end surface of the limit plate 33. The side that the side protection piece is close to drying table 1 is provided with side inclined plane 42 on the side, side inclined plane 42 lower extreme is closer to drying table 1 and is higher than 1 up end of drying table falls the masterbatch warp on the side protection piece side inclined plane 42 falls on the section of drying table 1. The side inclined plane 42 is provided with an upward inclined side air blowing hole 41 for blowing the color master batch flying to the side protection block back to the upper part of the drying table 1.

The working principle of the invention is briefly explained below: the masterbatch on the feeding conveyer belt 51 is separated from the conveyer belt, and is blown up by the feeding hole 13 on the drying table 1 to be conveyed to the upper part of the drying table 1, the drying hole 11 on the drying table 1 is connected with the hot air pipeline 16, the masterbatch is continuously blown into a suspended state by the blown dry hot air, the masterbatch rolls in the air, all surfaces can be subjected to the hot air, the heating is uniform, and the drying effect is good; the inclined drying holes 11 can move the color master batches towards the discharging conveying belt 52. There is ventilation hole 31 on the last protection casing 3 of drying station 1, will the wind-out stoving region that drying station 1 blew out, the tiny particle in the masterbatch passes through under hot-blast blowing ventilation hole 31 gets into in the last protection casing 3, quilt exhaust fan 36 blows the edge of last protection casing 3, separates with the masterbatch, plays the effect of cleaing away impurity. The humidity detector 32 above the middle of the drying table 1 can detect the humidity of the air flowing through the vent hole 31, determine whether the color masterbatch needs to be dried continuously, and control the proportion of hot air in the air supply hole 12 at the rear section of the drying table 1.

Claims

1. The drying device for the color master batches comprises a feeding conveying belt (51) and a discharging conveying belt (52), and is characterized in that a drying table (1) is arranged between the feeding conveying belt (51) and the discharging conveying belt (52), an air pipeline (15) and a hot air pipeline (16) are arranged in the drying table (1), a protrusion (21) is arranged on the side face, close to the feeding conveying belt (51), of the drying table (1), a feeding hole (13) is formed in the upper end face of the protrusion (21), a drying hole (11) is formed in the upper end face, close to the feeding conveying belt (51), of the drying table (1), the drying hole (11) is connected with the hot air pipeline (16), an air supply hole (12) is formed in the upper end face, close to the discharging conveying belt (52), of the drying table (1), the air supply hole (12) is connected with the air pipeline (15) and the hot air pipeline (16), a first regulating valve (17) is arranged in a pipeline connecting the air supply hole (12) and the hot air pipeline (16), a feeding hole (14) is arranged on the upper end surface of the drying table (1) close to the discharging conveying belt (52), and the feeding hole (13), the feeding hole (14) and the air supply hole (12) are inclined towards the side of the drying table (1); an upper protective cover (3) is arranged above the drying table (1), a limiting plate (33) is arranged at a position, close to the drying table (1), of the upper protective cover (3), a through vent hole (31) is formed in the end face of the limiting plate (33), a humidity detector (32) is arranged on the inner circumferential surface of the vent hole (31) in the middle upper portion of the drying table (1), an isolation cover (34) is arranged on the limiting plate (33), the isolation cover (34) and the limiting plate (33) form a first cavity (35), an exhaust fan (36) is arranged on the side wall of the isolation cover (34), and a filtering device (37) is arranged on the side wall, opposite to the exhaust fan (36), of the isolation cover (34); the drying table (1) is provided with side protection blocks (4) on two sides, and the upper end faces of the side protection blocks (4) are higher than the lower end faces of the limiting plates (33).

2. Drying unit for masterbatches according to claim 1, characterized in that the passage of said hot air passage in connection with the drying hole (11) is provided with a second regulating valve (18).

3. Drying device for color masterbatch according to claim 1, characterized in that the side protection block (4) is provided with a side inclined plane (42) on the side near the drying table (1), the lower end of the side inclined plane (42) is closer to the drying table (1) and higher than the upper end of the drying table (1), and the side inclined plane (42) is provided with a side blow hole (41).

4. A drying device of masterbatch according to claim 3, characterized in that the side blow holes (41) are inclined upwards.

5. The drying device for masterbatch according to claim 1, characterized in that the upper end surface of the drying table (1) is inclined, and the discharging position of the drying table (1) is lower than the feeding position.

6. Drying device for color concentrates according to claim 1, characterised in that the limit plate (33) is provided with a receiving groove (38) close to the upper end face of the filtering means (37).

7. Drying unit for masterbatches according to claim 1, characterized in that said feeding hole (13) is connected to a hot air duct (16) and said feeding hole (14) is connected to an air duct (15).